Re: Need Help - 1975 Johnson 20 hp Outboard
Hi...<br /><br />Cool project... 3 thoughts:<br /><br />1) whatever throttle arrangement you come up with, you might want to figure in the capability to restrict throttle movement (a speed governer)... It looks like it could be a fast rig, and you might wanna restrict your 12 year old to speeds below Mach 1 until he gets the feel for the boat.<br /><br />2) I know your engine wouldn't have come with one originally, but you'd probably want to rig a tether switch to ground the ignition and kill the motor if the operator inadvertently leaves the boat. Would also be handy if there's a failure somewhere in the throttle cable assembly (how would you shut it down AND steer at 40 mph?)<br /><br />3) I'd guess the twist grip and foot switch are spring loaded to return to "idle" position when released... If so, it would make cold starting the engine by yourself a PITA. (can's set it to fast idle and have it stay there).<br /><br />Anyway, those are my thoughts... safety first!
Hi...<br /><br />Cool project... 3 thoughts:<br /><br />1) whatever throttle arrangement you come up with, you might want to figure in the capability to restrict throttle movement (a speed governer)... It looks like it could be a fast rig, and you might wanna restrict your 12 year old to speeds below Mach 1 until he gets the feel for the boat.<br /><br />2) I know your engine wouldn't have come with one originally, but you'd probably want to rig a tether switch to ground the ignition and kill the motor if the operator inadvertently leaves the boat. Would also be handy if there's a failure somewhere in the throttle cable assembly (how would you shut it down AND steer at 40 mph?)<br /><br />3) I'd guess the twist grip and foot switch are spring loaded to return to "idle" position when released... If so, it would make cold starting the engine by yourself a PITA. (can's set it to fast idle and have it stay there).<br /><br />Anyway, those are my thoughts... safety first!
<br /><br />BF.... Saftey is and always will be a factor when any kids are involved.<br />I have a teather kill switch on order and it WILL be hooked up before he gets on it.<br /><br />My son is a good kid. He has a level head on his shoulder, earns his keep and respects his and others property. <br />He's not getting a free ride here!<br />HE bought the "Water Cat" with money HE earned from shoveling snow and cutting grass. (he's not affraid of hard work either 